Spraying device



Aug. 19, 1930. A. A. BREUER SPRAYING DEVICE Filed Feb. 16, 1928 MEI Z UT": AdamA.Br6u6r Patented Aug. 19, 1930 UNITED STATES ADAM A. BREUER, OF CHICAGO, ILLINOIS sPaAYIno DEVICE Application filed February 16, 1928 Serial No. 254,715.

This invention relates to spraying devices in which the liquid to be applied is projected onto the object to be treated by a current of air.

5 Heretofore it has been customary to produce the desired current of air by a hand pump which has numerous disadvantages such as lack of throwing power, intermittency of operation and so forth.

Another disadvantage of the old types of spraying device was the readiness with which the liquid contents spilled.

It is an object of the present invention, therefore, to provide an improved spraying device as regards both air and liquid supply.

A further object of this invention is to provide a pressure sprayer in which spillage of the liquid contents is prevented in every position of use of the sprayer.

Other and further important objects of the invention will be apparent from the disclosures in the accompanying drawin "s and the following specification.

The invention (in a referred form) is illustrated on the drawings and hereinafter more fully described.

On the drawings: 7 I

Figure 1 is a side elevation of one form of the device as a whole.

Figure 2 is a central vertical section through the liquid receptacles, nozzles, and parts integral therewit V Figure 3 is a detail sectional view on the line III-III of Figure 2.

Figure 4 is'a longitudinal central section through the liquid nozzle or jet.

Figure 5 is a detail view showing a modified form of construction. 4

As shown on the drawings: I

The device comprises a tank 1 for the liquid to be sprayed, conveniently formed of sheet metal. Across the top and preferably soldered thereto is an air discharge pipe 2. This pipe is conical in formnot only to pro- 45 duce a more concentrated blast of air at its discharge end but also to facilitate the connection of the pipe to the discharge orifice of a portable electric blower 3. This is ac complished by a connector e-having at one end a conical portion adapted frictionally to engage the interior of the large end of the conical air discharge pipe 2.. The other end of the connector 4 is formed with the usual internally arranged coupling lugs adapted to engage similar but externally arranged lugs 65 on the discharge orifices 5 of the blower. The blower comprises the customary encased motor and fan and is provided with a handle 6 carrying the controlling switch 7.

The tank or liquid receptacle 1 is provided with a liquid discharge tube 8 which extends from the rear lower part of the tank diagonally forwardly and upwardly into the front or discharge end of the pi e 2. The forward end of the tube 8 is cut so that its axis is concentric with that of the pipe 2. A nozzle 9 is threaded onto the discharge end of the tube 8 and by adjustment may within certain limits control the spread of the spray discharge. A slot 10 is cut in the end of the nozzle for engagement with a screw driver to facilitate its removal or replacement by a nozzle of different bore to suit liquids of various viscosities and kinds.

While the air passing out through the pipe 2 produces-a suction on the liquid within the pipe 8 it is desirable to aid this suction by air pressure on the surface of the liquid with in the tank. For this purpose an aperture 11 is provided in the bottom of pipe 2 and the top of tank 1. To take advantage not only of the static pressure in the pipe 2 but also of the kinetic pressure a deflector 12 is provided adjacent this aperture. Conveniently the aperture and deflector are formed by making a U -shaped cut in the metal and bending upwards the metal lying within such cut. r

It is frequently desirable to point the spraying device upwards almost vertically and with an air aperture arranged centrally or thereabouts this cannot be done when the tank is nearly full of liquid without liquid running out of the aperture. If the aperture is disposed towards the front of the tank then the liquid will spill out when the spraying device is pointed downwards. To prevent the liquid spilling in any position in which the discharge end of the pipe 2 is pointed and with the lower or rear end of l the tube 8 submerged in the liquid a trough shaped member 13 is attached to the un er side of the top of the tank 1 and extending toward the discharge end of the pipe 2. This trou h shaped member is closedat its rear end int open at its front end and so provides a assage from the aperture 11 to the front of the tank and is closed at all points except at its front end.

The trou h 13 is. referably of greater width than dc th and l ias its bottom substantiallyfaralle with the cover and is so arrange to normally dischafige air above the liquid in the tank 1. Sho d the pipe 2 be pointed downwardly, then the incoming air in the trough would prevent liquid passing out through the same and thereby prevent spillage. A

In place of a trough shaped member a tube 14 may be used, as shown in Figure 5. In this case one-half of the tubemay be arranged to project into the pipe 2 to act as a deflector.

If desired, the aperture 11 ma be disposed further to the rear of the tank t an as shown in the drawings so that the spraying device may be tipped until directed vertically downwards without spilling li uid. In that case, however, the rear end of t e tube 8 would be uncovered so that the device would cease to spray. For ordinary purposes, therefore, it is suficient to arrange the aperture 11 about the center of the tank.

A handle may convenientlybe provided, as shown, for lifting the tank and aiding in the directionof the spray. v

I am aware that many changes may be made and numerous details of construction may be varied through a wide ran without departing from the principles of t is'invention, and I therefore do not purpose limiting the patent granted herein, otherwise than necessitated .y the prior art.

I claim as my invention: 1. A device of the kind set forth comprismg a container for liquid, an air discharge pi extending across the to thereof, a liqui ipe exten g di nally from a P011; ad acent the bottom of t e container mto sai air discharge pi an air admission trough against the and; side of the tap, andleading thetop andfront of the container rearwardly toward the center of the container and communicating at its rear end with the air dischar pipe, said trough having its rear end cl 2. A device of the kind set forth comprising a container for liquid, an air discharge pi extending acroes the top thereof, a liqn1 discharge mextending from the rear lower grater o the container forwardly and u we ymto airdischarge' pipe,anair ssion trough lying the underside of the top an leading from the top and front of the container rearwardly towards tion at the other end, a container for liquid, a conical air discharge pipeextending across; the top thereof, the larger end of which is' adapted for frictional engagement with the conical ortion of the couplln'g member, and

a liqui discharge pipe extending from a point adjacent the bottom of the container into said air discharge pipe, a trough against the undersideof the container top extendin in the same direction and underlying sai air discharge pipe and having communica-" tion with said air discharge p1 at a point remote from the discharge en of said air pipe, said trough communicating with the interior of said container at a point above the normal level of the li uid therein and adjacent the discharge en of said air discharge pipe, said trough having its rear end closed. 4. A pressure sprayer including a liquid tank, a top for said tank, an air discharge pipe secured to said top, an air trough underlying said top and extending in the same direction as said pipe andhaving its outer end open and its rear or inner end closed and disposed to discharge immediately underneath the top soas to discharge air in the same general direction as the flow of the air through said pipe, said top having an aperture therein between said pipe and said trough near the rear end of said trough for afiording com- -munication therebetween, a liquid discharge ipe supported by said top and having its discharge end within and adjacent the discharge end of said air discharge pipe and extending downwardly and diagonally rearwardly from its dischar end and terminating near the bottom an rear of said tank at a point remote from the discharge end, said liquid discharge pipe being subwmtially straight for the greater portion of its .andsaidtrough'soa w thres to said air "r pipe as to have t e discharge end of the tro h substantially \mderneath the discharge en of the air discharge Pap In testimony whereof I have hereunto subscribed my name at Chicago, Cook County,

Illinois.

- ADAM A. BBEUER.

Ill 

